GraphQL Query Tester – Free Online GraphQL Query Runner & API Explorer

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Interact with GraphQL APIs Instantly

The GraphQL Query Tester by AllFileTools is a streamlined utility designed for developers to execute queries and mutations without the overhead of a full IDE. Whether you are debugging a complex backend, verifying a new schema, or testing API endpoints, our runner provides a clean environment to send requests, manage headers, and inspect JSON responses in real-time.

What is GraphQL?

GraphQL is a query language for APIs and a runtime for fulfilling those queries with your existing data. Unlike REST, which requires loading from multiple URLs, GraphQL APIs get all the data your app needs in a single request.

  • Queries: Used to fetch data (similar to GET).

  • Mutations: Used to modify server-side data (similar to POST/PUT).

  • Variables: Allow you to reuse the same query structure with different dynamic values.

How the GraphQL Tester Works

  1. Compose Query: Enter your query or mutation into the editor.

  2. Add Context (Optional): Provide JSON variables or custom Request Headers (like Authorization tokens).

  3. Execute: Click "Send Request." The tool processes the standard HTTP POST payload with your GraphQL structure.

  4. Inspect: View the formatted JSON response, HTTP status code, and execution time (ms).

Key Features & Technical Capabilities

  • Full CRUD Support: Seamlessly execute both data-fetching queries and data-modifying mutations.

  • Variable & Header Integration: Dedicated JSON panels for variables and headers allow for testing authenticated APIs and complex input types.

  • Live Performance Metrics: We display the exact Response Time and Status Codes, helping you optimize your API performance.

  • Smart Request History: Access your last 50 requests via a session-based history tab. You can reload past queries instantly without re-typing.

  • Raw & Formatted View: Responses are parsed into a beautiful, readable JSON format with a raw output fallback for non-standard responses.

What Makes This Tool Unique?

  • No Abstraction Policy: Unlike many tools that try to "fix" your query, we show you exactly what the server returns. This raw accuracy is crucial for debugging server-side errors.

  • Session-Based Privacy: Your history is stored locally in your browser session. We use No Database Storage, meaning your sensitive API queries and tokens stay between you and the server.

  • High-Speed Execution: Optimized for minimal latency, our backend handles the POST request efficiently and clears session files after 24 hours.

Who Can Use This Tool?

This GraphQL Query Tester is ideal for frontend developers, backend developers, QA engineers, DevOps professionals, students, API testers, technical product managers, and anyone working with or learning GraphQL who needs a fast and reliable way to execute queries and mutations without setting up a full development environment.

Security & Data Privacy

We take API security seriously. All requests are transmitted via SSL/TLS encryption.

  • No Permanent Storage: Your queries, variables, and responses are never saved on our servers.

  • Local History: History is temporary and can be cleared with a single click.

  • Manual Cleanup: You have full control over your session data; nothing persists once you clear your history or session.

GraphQL Query Tester FAQs

Answers to common questions about using the GraphQL Query Tester tool.

You can send GraphQL queries and mutations. The tool executes exactly what you enter and displays the returned response.

Yes. If your query requires variables, you can provide them in JSON format. The tool parses and sends them along with the request.

The tool supports JSON-formatted responses and provides a formatted output viewer for easy debugging.

Yes. You can include custom HTTP headers using JSON format, which is useful for authorization tokens or other request-specific headers.

No. The tool does not validate or modify queries. It sends the query exactly as provided and displays the response returned.

 

Request history is stored per browser session. Each executed request is saved along with its response and metadata for easy reuse.

The tool keeps up to 50 recent requests. Older entries are automatically removed as new ones are added.

No. Clicking a history item loads the saved inputs and displays the cached response without sending a new request.

Yes. You can clear all stored history at any time using the Clear History option.

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